Three levels of Fasting
"It should be known that there are three grades of fasting: ❶ Sawm al-umūm ( ordinary fasting) means abstaining from food, drinks and sexual satisfaction. ❷ Sawm al-khusūs (specila fasting) means keeping ones's eyes, tongue, hands and feet-and all other organs-free from sin. ❸ Sawm Khusūs al-khusus (Exra -special fasting) means fasting, of the heart from unworthy concerns and worldly thoughts in total disregard of everything but Allah. [IMÁM al-Ghazalī |Ihya Ùlum al-Din ]